Other Financial Instruments and Fair Value Measurements (Details Textual) (USD $) In Thousands, unless otherwise specified	Oct. 31, 2011
Other Financial Instruments and Fair Value Measurements (Textual) [Abstract]
Company's Municipal bond mature in 2012	$ 647
Company's Municipal bond mature in 2013	3,371
Company's Municipal bond mature in 2014	742
Company's Municipal bond mature in 2015	2,766
Company's Municipal bond mature in 2016	$ 13,155